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Optimizing the specific charge for limestone blasting at Aruwakkalu Limestone Quarry

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dc.contributor.author Perera, WDS
dc.contributor.author Epa NBM
dc.contributor.author Neligama, DA
dc.contributor.author Hemalal, PVA
dc.contributor.author Dharmaratne, PGR
dc.contributor.editor Abeysinghe, AMKB
dc.contributor.editor Dassanayake, ABN
dc.contributor.editor Elakneswaran, Y.
dc.date.accessioned 2017-10-30T19:52:19Z
dc.date.available 2017-10-30T19:52:19Z
dc.identifier.citation Perera, W.D.S., Epa N.B.M., Neligama, D.A., Hemalal, P.V.A., & Dharmaratne, P.G.R. (2017). Optimizing the specific charge for limestone blasting at Aruwakkalu Limestone Quarry. In A.M.K.B. Abeysinghe, A.B.N. Dassanayake & Y. Elakneswaran (Eds.), Proceedings of International Symposium on Earth Resources Management & Environment 2017 (pp. 33-42). Department of Earth Resources Engineering, University of Moratuwa.
dc.identifier.uri http://dl.lib.mrt.ac.lk/handle/123/12835
dc.description.abstract The objective of this research is aimed at optimizing the specific charge for limestone blasting at Aruwakkalu limestone quarry without leading to poor fragmentation of the blasted material. Thus, in reducing costs incurred during drilling and blasting activities, specific charge plays a vital role in open pit blast design as it affects many operational costs in mining activities. Therefore, at the quarry, specific charge is calculated for each blast and is monitored and maintained. Blasting parameters such as spacing and burden are already optimized at quarry according to the empirical formulae published by Langefors and Kihlstrom (1976).Therefore, when optimizing specific charge, it was first decided to change blasting parameters having the greatest effect on fragmentation such as spacing, burden, and charging method and evaluate the fragmentation of the blasted material because it is often difficult to optimize several blasting parameters simultaneously. Since fragment size directly affects crushing, a computer aided model called ‘Split Desktop’ was used to analyse fragmentation of material using digital photographs. Results of the four test blasts were analysed on cost basis. Thus, the blast geometry which resulted the lowest cost and the fragmentation within a manageable level is recommended to be practiced at the quarry in future. en_US
dc.language.iso en en_US
dc.subject Decking Charging Method en_US
dc.subject Explosives
dc.subject Fragmentation
dc.subject Split Desktop
dc.title Optimizing the specific charge for limestone blasting at Aruwakkalu Limestone Quarry en_US
dc.type Conference Full-text en_US
dc.identifier.faculty Engineering en_US
dc.identifier.department Department of Earth Resources Engineering en_US
dc.identifier.year 2017 en_US
dc.identifier.conference International Symposium on Earth Resources Management & Environment 2017 en_US
dc.identifier.place Wadduwa en_US
dc.identifier.pgnos pp. 33-42 en_US
dc.identifier.proceeding Proceedings of International Symposium on Earth Resources Management & Environment 2017
dc.identifier.email hpanagoda54@gmail.com en_US


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